Rotork supplies solar-powered actuators
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Rotork Skilmatic product story
Edited by the Engineeringtalk editorial team
Jul 22, 2009
Rotork Skilmatic EH electro-hydraulic valve actuators have provided a solution for the provision of reliable emergency valve operation on a slurry pipeline in the Chilean desert.
The Atacama Desert in north-east Chile is traversed by an 80km pipeline owned by the mining company Compania Minera del Pacifico.
The pipeline carries iron slurry from the town of Copiapo to the port of Caldera, from where it is exported.
The Rotork actuators have been installed at the UVS-1 emergency plant centre, half way along the pipeline and in the middle of the Atacama Desert.
The annual rainfall in this area is just 12mm and the ambient temperature fluctuates between -15C in winter and +40C in summer.
Three Skilmatic EH electro-hydraulic actuators have been installed to operate ANSI Class 1500 10in ball valves.
The actuators provide double-acting on-off control for the valves, under remote Scada system supervision.
The Rotork Skilmatic EH design comprises an integrated control module, a hydraulic manifold and a power unit consisting of a motor, hydraulic pump and reservoir.
Protected by a waterproof, dustproof and explosion-proof enclosure, the actuators' electronic functionality features Rotork's IQ intelligent electric actuation technology, providing configuration, diagnostics, fault indication and position indication by means of a digital visual display and non-intrusive, two-way communication with a hand-held programmer.
The self-contained actuators operate from a 24V DC supply, enabling an efficient, economic and environmentally friendly solar-powered battery system to be used.
The security of emergency operation is further enhanced at this site by back-up nitrogen tanks, which enable each actuator to perform three valve strokes.
'The Atacama Desert project is one of a number of remote pipeline applications which have recently adopted the Rotork Skilmatic EH solution,' said Gabriel De Visnyey, Rotork Fluid Systems regional sales manager for Latin America,.
'The features of the electro-hydraulic design are ideal for remote installations and facilitate the use of renewable energy sources such as solar power whenever possible,' he added.
The actuators for the UVS-1 emergency plant centre were sold by Rotork's Chilean representative Ineco A.
The procurement and construction contractor for the project is Constructora Belfi and the engineering contractor is Brass.
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